ISO 9001 CERTIFIED BY DSCC
M.S.KENNEDY CORP.
3554
HIGH SPEED, WIDEBAND
OPERATIONAL AMPLIFIER
4707 Dey Road Liverpool, N.Y. 13088
(315) 701-6751
MIL-PRF-38534 QUALIFIED
FEATURES:
Stable at Low Gain
Fast Slew Rate - 1200V/µs Typical
Gain Bandwidth Product - 1200 MHz Typical
Low Quiescent Current - ±14.0 mA Typical
Low Offset - 2 mV Maximum
Drop In Replacement for OPA 3554 and TP 3554
High Output Current - ±100mA Minimum
DESCRIPTION:
The MSK 3554 is a pin compatible, low gain stable, drop-in replacement for the OPA 3554 and TP 3554. The
MSK 3554 does not exhibit high frequency output oscillations like other versions of the 3554 when operated at
closed loop gains of less than 55 V/V. The extremely low input bias current and input offset voltage ratings coupled
with a high slew rate and wide bandwidth make the MSK 3554 an excellent choice for fast D/A converters, buffers,
pulse amplifiers and other high speed op-amp applications. The MSK 3554 is packaged in an 8-pin TO-3 using thick
film hybrid technology to obtain high reliability and compact size.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
Fast D/A Converters
Pulse Amplifiers
Video Instrumentation
Fast Buffer/Follower
Video Frequency Filters
PIN-OUT INFORMATION
1
2
3
4
1
Output
Positive Power Supply
Compensation
Balance
8
7
6
5
Balance
Negative Power Supply
Non-Inverting Input
Inverting Input
Rev. B 7/00
ABSOLUTE MAXIMUM RATINGS
±VCC
IOUT
VIN
TC
±18V
Supply Voltage
±150mA
Peak Output Current
±25V
Differential Input Voltage
Case Operating Temperature
-55°C to +125°C
MSK 3554B
-40°C to +85°C
MSK 3554
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TST
TLD
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PD
TJ
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Storage Temperature Range -65°C to +150°C
Lead Temperature Range
300°C
(10 Seconds)
Power Dissipation
See Curve
Junction Temperature
175°C
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ELECTRICAL SPECIFICATIONS
Parameter
MSK 3554B
Group A
Test Conditions
MSK 3554
Subgroup
Min.
Typ.
Max.
Min.
Typ.
Max.
Units
-
±12
±15
±18
±12
±15
±18
V
STATIC
Supply Voltage Range
3
Quiescent Current
VIN=0V
1
-
±14
±20
-
±14
±20
mA
AV=-1V/V
2,3
-
-
±30
-
-
-
mA
Thermal Resistance
Junction to Case Output Devices
-
-
37
-
-
37
-
°C/W
Bal.Pins=N/C VIN=0V AV=-10V/V
1
-
±0.5
±2.0
-
±0.5
±3.0
mV
-
±20
±50
-
±20
-
µV/°C
3
INPUT
Input Offset Voltage
Input Offset Voltage Drift
Input Offset Adjust
3
VIN=0V
2,3
RPOT=20KΩ To +VCC AV=-1V/V
1,2,3
Adjust to Zero
mV
VCM=0V Either Input
1
-
±10
±50
-
±20
±100
pA
2,3
-
±10
±50
-
-
-
nA
1
-
±2.0
±25
-
±2.0
±30
pA
±30
-
-
-
nA
-
-
10
-
Ω
Input Bias Current 10
Adjust to Zero
Input Offset Current
VCM=0V
2,3
-
±2.0
Input Impedance 3
F=DC Differential
-
-
10
∆ VCC=10V
-
80
110
-
80
110
-
dB
Power Supply Rejection Ratio
3
11
11
Input Noise Density
3
F=1KHz
-
-
15
-
-
15
-
nV√Hz
Input Noise Voltage
3
F=10Hz To 1MHz
-
-
10.0
-
-
10.0
-
µVrms
RL=100Ω
4
±10.5
±12
-
±10
±12
-
V
±100 ±120
-
±100 ±120
-
mA
OUTPUT
Output Voltage Swing
Output Current
Settling Time 2 3
Power Bandwidth
3
Bandwidth (Small Signal)
3
TJ<150°C
4
0.1% 10V step
4
-
120
150
-
120
150
nS
RL=100Ω VO=±10V CC=0
4
16
19
-
15
19
-
MHz
CC=0
4
70
90
-
70
90
-
MHz
VOUT=±10V RL=100Ω CC=0
4
800
1200
-
750
1200
-
V/µS
CC=0 RL=100Ω F=1KHz VOUT=±10V
4
90
96
-
88
96
-
dB
TRANSFER CHARACTERISTICS
Slew Rate
Open Loop Voltage Gain
3
NOTES:
1
2
3
4
5
6
7
8
9
10
Unless otherwise specified ±VCC=±15VDC
AV=-1, measured in false summing junction circuit.
Devices shall be capable of meeting the parameter, but need not be tested. Typical parameters are for reference only.
Industrial grade devices shall be tested to subgroups 1 and 4 unless otherwise specified.
Military grade devices ('B' suffix) shall be 100% tested to subgroups 1,2,3 and 4.
Subgroup 5 and 6 testing available upon request.
Subgroup 1,4
TA=TC=+25°C
Subgroup 2,5
TA=TC=+125°C
Subgroup 3,6
TA=TC=-55°C
Measurement taken .5 second after application of power using automatic test equipment.
2
Rev. B 7/00
APPLICATION NOTES
HEAT SINKING
RθSA = ((TJ - TA)/PD) - (RθJC) - (RθCS)
= ((125°C - 90°C) / .64W) - 37°C/W - .15°C/W
= 54.7 - 37.15
= 17.54°C/W
Refer to the following thermal model and governing equations to determine appropriate heat sinking for your application.
Thermal Model:
The heat sink in this example must have a thermal resistance
of no more than 17.54°C/W to maintain a junction temperature
of no more than +125°C.
OFFSET NULL
Typically, the MSK 3554(B) has an input offset voltage of
less than ±0.5mV. If it is desirable to adjust the offset closer
to "zero", or to a value other than "zero", the circuit below is
recommended. Rp should be a ten-turn 20KΩ potentiometer.
Typical offset adjust is ±20mV.
Governing Equation:
TJ=PD x (RθJC + RθCS + RθSA) + TA
Where
TJ = Junction Temperature
PD = Total Power Dissipation
RθJC = Junction to Case Thermal Resistance
RθCS = Case to Heat Sink Thermal Resistance
RθSA = Heat Sink to Ambient Thermal Resistance
TC = Case Temperature
TA = Ambient Temperature
TS = Sink Temperature
Example:
This example demonstrates a worst case analysis for the opamp output stage. This occurs when the output voltage is 1/2
the power supply voltage. Under this condition, maximum power
transfer occurs and the output is under maximum stress.
COMPENSATION
The compensation capacitor is connected between pins 1
and 3 and is used to optimize bandwidth and slew rate while
maintaining circuit stability. The effect of compensation capacitance can be seen in the Bode Plot under the Typical Performance Curves. As closed loop gain increases, compensation
capacitance can decrease and higher slew rates and wider bandwidths will be realized. See the component selection table for
recommended values of input and feedback resistance as well
as feedback capacitance and compensation capacitance.
Conditions:
VCC = ±16VDC
VO = ±8Vp Sine Wave, Freq. = 1KHZ
RL = 100Ω
For a worst case analysis we will treat the +8Vp sine wave
as an 8 VDC output voltage.
1.) Find Driver Power Dissipation
PD = (VCC-VO) (VO/RL)
= (16V-8V) (8V/100Ω)
= .64W
2.) For conservative design, set TJ=+125°C
3.) For this example, worst case TA=+90°C
4.) RθJC = 37°C/W from MSK 3554B Data Sheet
5.) RθCS = 0.15°C/W for most thermal greases
6.) Rearrange governing equation to solve for RθSA
COMPONENT SELECTION TABLE
3
GAIN
-1
Rin
5.6KΩ
Rfb
5.6KΩ
Cfb
2.0pF
Ccomp
10pF
-10
-100
560Ω
100Ω
5.6KΩ
10KΩ
1.2pF
0.0pF
10pF
0.0pF
follower
0Ω
0Ω
0pF
12pF
Rev. B 7/00
TYPICAL PERFORMANCE CURVES
4
Rev. B 7/00
MECHANICAL SPECIFICATIONS
TOP VIEW PIN REFERENCES SHOWN.
ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED
ORDERING INFORMATION
Part
Number
Screening Level
MSK3554
Industrial
MSK3554B
Military-Mil-PRF-38534
M.S. Kennedy Corp.
4707 Dey Road, Liverpool, New York 13088
Phone (315) 701-6751
FAX (315) 701-6752
www.mskennedy.com
The information contained herein is believed to be accurate at the time of printing. MSK reserves the right to make
changes to its products or specifications without notice, however, and assumes no liability for the use of its products.
5
Rev. B 7/00